Camera and film spool therefor



Juy i7, 1934. MURQS LQG'JNH CAMERA AND FILM SPOOL THEREFOR Filed April 61952 2 Sheets-Sheet l 3? .5f if al 1g j@ |||||||||||||Il m Il" mmmnnll'5g 46 T71 vena?" E Josep/i M0705 `Efuly i7, 1934. J. MUROS 1,96?,061

CAMERA AND FILM SPOOL THEREFOR Filed April 6, 1932 2 Sheets-Sheet 2wvezior 30 JOSe/pb Muros liti Patented July 17, 1934 UNITED STATES Lesmo1,967,061 CAMERA. AND FILM SPOL THEREFOE Joseph Muros,

Belmont, Mass..

` Application April s, 1932, serian No. sesos@ 16 Claims.

This invention relates to roll film cameras and to the nim spoolsthereof. Such e camere has provision for supporting two spools, onecarrying the nomexposecl lm and being free to unwinol tlie other beingadapted to receive and rez wine. the nlm. therefrom after it is exposed.When .reloading e, esmero, the new roll is located in piece ond thenthreaded onto the revvinding spool, cere being' used so to locate thenew roll tiiot the emulsion side, and not the preteen tive peper side,of the film faces the lens. An experiences. operator ordinarily has nodifoulty in loading the present known cameras except es lie tneyt'iiougotlessly place the new spool in e po sitieni wherein the paperside of the film feces lens, enel in that esse the sensitive emulsion isnot exposed through the lens ond no pictures ootoineci. lt rney veryfrequently happen, how s tliot en inexperienced operator will place enew spool in the Wrong position, which fiosiu s n is merely an end toend reversal of tire spool7 time present known cameras supporting thespool toy e. noir of like studs which equally permit of eitlierposition. A burden is thus placed noon. time operator, with the resultthat irreplaceable pictures ore frequently lost, destroyed., enel4or'ospestive carriere and @im customers discern.-L ogeri en@ lost. Oneof the objects of my invention the provision oe, camere and nlm spool soconn structed that in reloading the cornersJ the new spool con beoperatively inserted only in the proc1 ner position, thus entirelyeliminating the above objections and making improper reloading o thecorners, impossible.

The object of my invention may be socorri- 'olisliec'i in. various Ways,as by the provision ot ineens preventing improper insertion of the newspool into the camera, or by the provision or ineens preventingunwincling of the spool ii irn-s nrooerly inserted. The spool is alsopreferably constructed that it will iit present known corria eres eswell es the camera disclosed herein, which comers is also so constructedtliot it will not re ceive nlm spools heretofore on tlie market. Thus,while time improved spool oi invention may loe freely purchased andneed. the olcl style comm e s, the old style spools cannot be used inthe iroi/ect corners oi my invention. The provision o suoli en improvedcombination comprises e for tliei object of the invention.

A earners. spool is ordinarily perforated et both ends whereby toreceive studs supporting tiie spool for tree rotation when the spool iscer frying the uneirposed film. One or more shoulders also provided-etone enti of the spool odio"J cent to the perforation for engagement by ospool rotating key in the camera when the spool is located in the filmrewinding position. @ne aspect o my invention es herein described.comprises lseymengeging ineens on shoulders, ono. cooperating ineens onthe esmero. or on one of its seid studs, for interfering with y,theshoulders one preventing rotation of tire imexposed nlm spool when inimproper the carcere.y the seid, ineens ond; shoulders presenting nointererence to free rotation oi the spool in its proper position. lineprovision of en improved spool of this motore comprises o further objectof the invention.

These enel other features oi the invention will loe cest understood one.epprecie'tecl from the fol lowing description o e preferred; embodimentthereof, selected for oorooses or illustration .one shown in theoecompenying olreitvings,

nEig. .l is e stole elevation of e. comers., omiten owey expose tlie $5spools tlierei i;

'""g, 2 is e sectionol View on line 22m-2 Fig. i on enloegeo.iregnientery sectional View showing the supporting oi one enel of thespool for iree rotation on o novel supporting stool;

l is on. enel elevation oi tire steil;

it is o. perspective view ci time driving eno. oi tire spool;

6 is eliise View oi spool;

Fig. l is s. side elevotion et tire snoei support ing studi shown inFigs. 3 snol e;

lig. il is et side elevation oi ti'ie stesi for ing the spool whenrevinriing tire film;

Fig. 9 is s, irogmentery view ci tine too `portion oi Fig. 2 out showingtile spool reversed enti to enel;

"Fig lo illustrates e. modieri form of spool in orosei' position es theidler spool in the corners.;

eig. il is e perspective view ci one enrloi this spool;

Fig. i2 is e. rsginentary view oi Fig. il@ ont snowing tlie spool no.reversed creol-temono rele tion;

i3 is en eno. view ol.' o lortlier mooiied forro of spool;

the otiier enel oi tlie rotot Fig. le is essentieel view token onlineiiD-le f i5 is 'View similar to out snowing e mosleri forni of theinvention;

Fig., lo is s like View but snowing' the spool in reversed encltomenclrelation.

lin i one 2 of the drawings l lieve illus- 'tlie spool, including 6position in vfait? ard roll lrn camera comprising a Y. portion l2removable for reload- The uneirposed portion or" the c ri .d by a spool16 and is rewound a spool after being exposed at 20. The spools areperforated at their ends whereby to receive studs on which the spoolscan rotate. These studs and the spools have heretofore been such as topermit insertion of a spool 16 in the position illustrated in Fig. 2, orin reversed endto-end position. ln the latter position, the protectivepaper side' of the iilm faces the lens at 20, with the result that noexposure of the sensitized nlm takes place. in accordance with one formoi my invention which l will now describe, Z so construct these partsthat the spool at 16 may rotate and permit unwinding of the filmtherefrom only when in the proper position illustrated in Figs. l, 2 and3.

The spools i6 and'18, as illustrated, each comprises a body portion 24,which may be of wood, supported by the metallic end members shown inFigs. 5 and 6. The driving end of the spool is shown in Fig. 5 andcomprises a metallic sleeve 26 mounted on the body of the spool andcrimped over a disk 28 at 30. The disk is centrally perforated at 32 ina manner providing a plurality of radially disposed ngers 34m the planeof the disk and projecting into the perforation, the spaces between thengers providing diametrically extending slits for receiving the rotarykey of standard cameras or the novel rotating key of the camera hereindescribed. It will also be noted, from Fig. 9, that the end of thewooden body of the spool terminates considerably short of the disk 28,thus providing a chamber 36, for a purpose hereinafter described. Themetallic member 38 on the opposite end of the spool is substantially thesame as is now provided on the idler end of standard camera spools, theend of the body portion 24, however, being somewhat short of the spoolend, whereby to provide a countersink 39 in the spool end, which end isalso perforated at 40.

The studs for supporting the spools 16 and 18 are carried on spring arms41 and 42 respectively. Plane cylindrical studs 44 and 46 are providedfor engaging the perforations 40 in the idle endV of the spool.' The end30 of the spool may be termed the driving end, since when positioned at18 the spool is rotated bythe engagement of a rotary stud 48 fittingwithin the perforation 32, the shape of the stud conforming to the shapeof the perforation. A similar, but non-rotary, stud 50 is provided forthe idler or supply spool at 16, this stud having a toothed portion 52corresponding in cross sections to the perforation 32 and an adjacentcylindrical or non-toothed shank or stem 54. When the spool is properlypositioned at 16 (Fig. 2), the fingers or teeth 34 are located over thesmooth shank 54 of the stud and the spool is free to rotate. However,should the operator place the spool in the wrong position (Fig. 9), i.e., reversed end to end, a small lug 55 on the arm 41 adjacent to thestud 44 will engage in the perforation 32 between its ngers 34 andprevent unwinding rotation of the spool, thereby informing the operatorof the error and requiring correction before proceeding further with thethreading up of the film. It will be noted that this lug 55 provides apositive non-releasable means which will at all times serve to preventrotation of the spool while it is reversed from its correct position.When the lm is properly loaded (Fig. 2), the countersink 39 accommodatesthe lug 55 in a manner not interfering with free unwinding rotation ofthe spool. When the spool i6 thus positioned and the :dim threaded up tothe spool l5, the cover l2 may be replaced and the nlm may be operatedby a key 56 having a portion engaging in a slot 58 of the stud d8.

The novel spool above described is so constructed that it will fit in areceive standard film spools, but the use camera herein described islimited to the spools herein disclosed. the proper and efficientfunctioning oi cameras depends to a very large extent upon the qualityof iilms used, but when the results obtained are unsatisfactory thecamera is more often blamed than are the films. My invention makes ispossible for a manufacturer of cameras and nlms to eliminate the use ofold or inferior iilms in his camera product and at the same time permitthe public to purchase his improved iilm product and use the same instandard cameras as freely as in cameras of his own manufacture. .T tshould be especially noted that I am enabled to carry out this featureof the invention by providing the spool with a chamber 36 in its drivingend for receiving the headed portion 52 of the idler stud 50, this endof the spool being supported for free rotation on the non-toothedportion 54 of the stud when the headed portion is within 'the chamber.

It is appreciated that the object of my invention may be secured byconstructions other than that above specifically described, and in Figs.10-12 I have illustrated such a modified form of spool. This spool 60has a driving end 62 identical with the spool end shown in Fig. 5. Theopposite end thereof (Figs. 11 and 12) is perforated in like manner butthe fingers 64 are somewhat longer and are bent inwardly toward thelongitudinal center of the spool, both ends of the spool beingsubstantially alike except for the arrangement and length of thesengers. The fingers at the spool end 62 are in the plane of the diskforming the end of the spool, and the holes between the ends of thelingers at both ends of the spool are of a size to t the studs 0fstandard cameras. When the spool is properly positioned, as the idlerspool in the camera (Fig. l0), it is free to rotate. However, when thespool is reversed end to end, the inwardly extending fingers 64 engagethe toothed head 52' of the stud 50' and prevent rotation of the spool.It will be noted that thisspool is provided with chambers 65 and 66 atits ends for receiving the stud head 52'. It should furthermore be notedthat, in addition to serving thesafety feature of preventing improperreloading of the camera, this form of my improved spool is also ofgreater convenience when used at 18 in rewinding the illm, since whenthus used it may be in either of its two endwise positions. Spoolsheretofore used have had a keyway at one end only and have, therefore,required that the nlm be started thereor my novel 'It is well known thatonin a direction locating that keyway adjacentto the winding key of thecamera.. Either end of this spool is adapted to cooperate with therotary stud 48.

The driving end of my novel spool, as illustrated in Fig. 5 and abovedescribed, may be constructed in various forms. In Figs. 13 and 14, Ihave illustrated a novel and inexpensive construction thereof and aconstruction which requires only a slight modification of the presentknown and standard camera. spool. The metallic end member of this spoolcomprises a camera adapted to' hub portion 70 tting over the bodyportion 'I1 150 oei illoeete. longitudinally inward. oi' e, stu ceiieelby the camere anni het ed of a shape and size congruous poi openinghaving an adjacent ing e tootL Wit?. seid 5 smaller soenk portionsupporting the heeel,

l) In the tooteil heed being seid opening and into vond the spool teet1spool to iotate with 1 adapted to projectJ through the chamber to apoint oee. teem-ler permitting with seid we spool is in propel end.-aosition Le the camel-e.

'1 combination, comete, an idle? spool eiefor having two dissmileflne115. oerittelly-dissed openings in its opposite ends i'espectiifelyWithin the spool inwardly of one openings, and a stud carried by the ereand etoo, eo". need of e, shape and. wie opening into Y out not tm'ougi.'the otlief opening Sti/ing adjacent smalle;l Shank footn u oortmg Jhhehead, seid chamber being of ermittlng free rotation of title camere, enidler spool tlie'efor having diem-like ends, sai-:l ends homing twodissimile? Connelly-disposed openings espev" the spool. having chamber[Jg/mv family of one of suole openings, and e tion-rotatable studE'lg'ldly ca-rrle oy the come-"eand having o toothed head of oleaje-email e poss thiough seid one opening anni into the olie ber but notthrough the other opening and li en ajeoent and smalle? sizioni: portionsuppo.

i e* the head, the ielative shapes eizes of onembe, head sham: beingsucio to peri" ototion of the sgooo y. the shan?? W is mended into themamie er through the so pe l i film spool :Sor oomci'es, bovine? eneloogestori llm receiving ooi/e of Wooo o?? the like t sheet metetl oepsindependently moimterl on oom theeof, one oep having e centl'e perfolfomtion with inwardly extending radially disgsose projections about itsperipliey ano. en ntene. oli ....noei beneath seid peirforation andetween ne the adjacent eno4 o? the core.

le. f1 camere, "liet/inf; e etuo with an emerges?.

toothed head am. te. smooth head, suppoiting shtml;

of reduced diemete in combinotion with o, .film spool having in one eperforation with its erige slotted to slide over toothed heed of thestud and freely tufo on the shank thereof, and a ohem'oer formed in theeno of the spool beneath saisi. perforation and o euicient size freelyto 1eceive the heed o1 the MDW-EOC'.

ICS

